/*
 * Copyright 2002-2016 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package cn.cloud.all.security.access.expression.method;

import cn.cloud.all.security.access.prepost.PreInvocationAttribute;
import org.springframework.expression.Expression;
import org.springframework.expression.ParseException;

class PreInvocationExpressionAttribute extends AbstractExpressionBasedMethodConfigAttribute implements PreInvocationAttribute {

    private final String filterTarget;

    PreInvocationExpressionAttribute(String filterExpression, String filterTarget, String authorizeExpression) throws ParseException {
        super(filterExpression, authorizeExpression);

        this.filterTarget = filterTarget;
    }

    PreInvocationExpressionAttribute(Expression filterExpression, String filterTarget, Expression authorizeExpression) throws ParseException {
        super(filterExpression, authorizeExpression);
        this.filterTarget = filterTarget;
    }

    /**
     * The parameter name of the target argument (must be a Collection) to which filtering
     * will be applied.
     *
     * @return the method parameter name
     */
    String getFilterTarget() {
        return filterTarget;
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        Expression authorize = getAuthorizeExpression();
        Expression filter = getFilterExpression();
        sb.append("[authorize: '").append(authorize == null ? "null" : authorize.getExpressionString());
        sb.append("', filter: '").append(filter == null ? "null" : filter.getExpressionString());
        sb.append("', filterTarget: '").append(filterTarget).append("']");
        return sb.toString();
    }
}
